Package for abrasive grinding wheels

ABSTRACT

A package ( 1, 11 ) for abrasive grinding wheels that includes a cover ( 3 ) and a base ( 4 ) adapted to close, seal and insulate the grinding wheels from atmospheric agents, cover ( 3 ) and base ( 4 ) being made of insulating material from atmospheric agents, for example plastic material. Between base ( 4 ) and cover ( 3 ), it is possible to interpose a cylindrical body ( 7 ) made of cardboard or plastic or plasticized cardboard; the plasticizing being only internal, only external or on both surfaces. The base ( 4 ) can comprise a cylindrical mantle ( 4   b ) defining a space where grinding wheels can be inserted.

The present invention deals with a package for abrasive grinding wheels.

Currently the above tools are possibly sold and stored in classic types of cardboard boxes, that do not protect in any way the grinding wheels from atmospheric agents.

Object of the present invention is realizing and making available a package for abrasive grinding wheels that removes the above-cited inconvenience.

Another object is making available suitable arrangements on the package cover and base in order to better stack two or more packages.

These objects and advantages are all obtained by a package for abrasive grinding wheels, subject matter of the present invention, that is characterised by what is provided in the below listed claims.

These and other characteristics will be better pointed out by the following description of some embodiments shown, merely as a non-limiting example, in the enclosed tables of drawing in which:

FIG. 1 shows a package for abrasive grinding wheels;

FIG. 2 shows the package of FIG. 1 from another point of view;

FIG. 3 shows the cover of the package for abrasive grinding wheels, in a top view thereof and in elevation;

FIG. 4 shows the cover in FIG. 3 in a perspective view;

FIG. 5 shows the base of the package for abrasive grinding wheels, in a top view thereof and in elevation;

FIG. 6 shows the base of FIG. 6 in a perspective view;

FIG. 7 shows a variation of an embodiment of the package for grinding wheels;

FIG. 8 shows in a perspective view the package of FIG. 7;

FIG. 9 shows a detail of the bottom of the package of FIGS. 7 and 8;

FIG. 10 shows two packages in a joined configuration;

FIG. 11 shows a section of the package of FIG. 1.

With reference to FIGS. 1 and 2, 1 designates a package for grinding wheels, subject matter of the present invention, that is composed of a cylindrical base 4 defining a space where grinding wheels must be inserted, closed by a cover 3 with a corresponding shape.

The cover 3, once coupled, is centred with the upper edge 4 a of the base 4.

The mantle 4 b of the base 4 has such a height as to be able to contain more that one stacked grinding wheel disk.

In practice, the base 4 operates as package while the cover 3 performs the function of closing and insulating the grinding wheels from atmospheric agents.

The cover 3 and the base 4 of the package 1 are made of any material adapted to insulate grinding wheels from atmospheric agents; preferably, they will be made of plastic material.

The cover 3 is shown in detail in FIGS. 3 and 4 in which there are four projections, designated as 3 c, adapted to define a cross-shaped groove 3 d whose purpose is described below.

The above projections 3 c, moreover, have such a shape as to define, if connected by a hypothetical circular joining line 3 b, an annular plane space 3 e peripheral to the cover 3, obtained between said line 3 b and the external side surface 3 a.

The base 4 is instead shown in detail in FIGS. 5 and 6, where the edge 4 a can be seen on the mantle 4 b, said mantle 4 b laterally extending with respect to the lower plane part 4 c, projecting therefrom in order to define four lips, designated with 4 d, and that are arranged in a peripheral annular space of the base 4.

Obviously, the four lips 4 d define as many openings, whose purpose will be described below.

With reference to FIG. 11, the coupling is shown, in section, between above cover 3 and base 4.

It must be observed that the upper part of the edge 4 a is in contact with the inside 3 f of the cover 3 so that a slit, designated in the figure with 10, is left defined between mantle 4 b and cover 3 a.

Purpose of the slit 10 is facilitating the possible cutting of the sealing band, if used, of the package 1 and separating the two components 3 and 4; the use of a band can occur should the weight of internal disk be such as not to impair their strength.

As a variation, the band can be of a type with pre-cut strip or with thread: in both cases, the separation occurs after having removed the strip or thread.

A variation of an embodiment is shown in FIGS. 7, 8 and 9 in which 11 designates a package for abrasive grinding wheels that has a cylindrical body 7 interposed between base 4 and cover 3.

Cover 3 and base 4 are, like in the previous example, made of any material that is adapted to insulate from atmospheric agents the grinding wheels contained therein, and preferably made of plastic material.

The cylindrical body 7 will be preferably made of cardboard or plastic or plasticized cardboard; in this latter case, plasticizing can be only internal, only external or on both surfaces.

Also in this new embodiment, similar projections 3 c and lips 4 d are included on cover 3 and base 4.

The purpose of such cover and of such base is double: firstly, they allow easily and stably strapping the package 1 or 11 since each strap is kept guided in the previously cited cross-shaped recess 3 d.

Secondly, the lip 4 d of the base 4 can be snugly engaged with the edge 3 e of the cover in a possible step of stacking many packages 1 or 11 of the same diameter.

FIG. 10 shows an example of two stacked packages 11, perfectly and conveniently stacked without risks that they mutually slide.

The choice whether to apply a banding or a strapping between cover 3 and base 4 or between cover 13 and body 7 will depend on the weight of the grinding wheels that the package 1 or 11 will have to support.

The cylindrical body 7 is secured to the corresponding base 14 through seaming or equivalent systems.

The choice whether to use the package with plastic mantle, designated with 1, or the one with mantle made of plasticized cardboard, designated with 11, will occur depending on the cost for making the dies and executing its forming.

Both packages 1 and 11, however, fully perform their function of insulating means of grinding wheels from atmospheric agents for which they have been designed.

According to a further variation of an embodiment, the mantle 4 b or the mantle 7 can have a series of internal ribs 20 in order to settle and centre the grinding wheels in addition to increase their strength.

According to a further variation of an embodiment, not shown, the coupling between cover 3 and base 4 can be performed by means of a threaded coupling in which said cover 3 is screwed onto the edge 4 a of the base 4.

The cover and the base have been designated as having such projections and edges as to allow stacking and strapping, however it is obvious that, without departing from the scope of the invention, they can be made smooth, thereby limiting the above mentioned function. 

1. Package (1, 11) for abrasive grinding wheels, characterised in that it comprises a cover (3) and a base (4) adapted to close, seal and insulate said abrasive grinding wheels from atmospheric agents, cover (3) and base (4) being made of insulating material from atmospheric agents, for example plastic material.
 2. Package (11) according to claim 1, characterised in that it comprises a cylindrical body (7) between said base (4) and the cover (3).
 3. Package (11) according to claim 2, characterised in that said cylindrical body (7) is made of cardboard or plastic or plasticized cardboard; said plasticizing being only internal, only external or on both surfaces.
 4. Package (1) according to claim 1, characterised in that said base (4) comprises a cylindrical mantle (4 b) defining a space where the grinding wheels have to be inserted.
 5. Package (1, 11) according to claim 1, characterised in that the cover (3) has four projections (3 c), defining a cross-shaped groove (3 d) and with such shape as to define a peripheral annular plane space (3 e) of the cover (3).
 6. Package (1, 11) according to claim 1, characterised in that the base (4) comprises four lips (4 d) defining as many openings, said lips (4 d) being placed in a peripheral annular space of the corresponding base (4).
 7. Package (1) according to claim 1, characterised in that between cover (3) and base (4) a slit (10) is defined by the contact between upper part of edge (4 a) and interior (3 f) of cover (3).
 8. Package (1) according to claim 1, characterised in that the mantle (4 b) of the cover (4) comprises a series of internal ribs (20).
 9. Package (11) according to claim 2, characterised in that the cylindrical body (7) is fastened to the corresponding base (14) by seaming or equivalent systems.
 10. Package (1) according to claim 1, characterised in that between said base (4) and cover (3) a threading is provided, adapted to allow closing the two members by screwing the cover (3) onto the edge (4 a). 